【摘要】 对于GB/T5009.60—2003《食品包装用聚乙烯、聚苯乙烯、聚丙烯成型品卫生标准的分析方法》测定食品接触塑料制品高锰酸钾消耗量,分析其测定过程的影响因素,归纳出不确定度的主要来源,形成不确定度评定程序和方法,经量化和合成得到相对标准不确定度,从而求得扩展不确定度。即当高锰酸钾消耗量为2.26mg/L时,相对标准不确定度为0.039,扩展不确定度为0.176mg/L(k=2)。更多还原

【Abstract】 In this study,factors affecting the determination of KMnO4 consumption of food contact plastics by the method of the Chinese National Standard GB/T 5009—2003 were analyzed,the main sources of measurement certainty were summarized,a procedure for certainty evaluation was established,and a relative standard uncertainty was obtained after calculating and synthesizing various uncertainty components and expanded. Potassium permanganate consumption was determined to be 2.26 mg/L for a polyethylene food box from a certain manufacturer,and the relative standard uncertainty for the determination was 0.039,and the expanded uncertainty was 0.176 mg/L (k = 2).更多还原